joyent-portal/spikes/leak/src/routes/leak.js

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2016-11-21 15:18:12 +02:00
const prettyHrtime = require('pretty-hrtime');
const clone = require('clone');
// leak example from https://auth0.com/blog/four-types-of-leaks-in-your-javascript-code-and-how-to-get-rid-of-them/
let theLeak = null;
const anotherLeak = [];
const fibonacci = (num) => {
if (num <= 1) return 1;
return fibonacci(num - 1) + fibonacci(num - 2);
};
module.exports = (server) => {
server.route({
method: 'GET',
path: '/mem',
config: {
handler: (req, reply) => {
const start = process.hrtime();
const originalLeak = theLeak;
const unused = () => {
// referencig something that is going to be replaced
if (originalLeak) {
console.log("hi");
}
};
theLeak = {
longStr: new Array(1000000).join('*')
};
anotherLeak.push(anotherLeak.length);
const end = process.hrtime(start);
reply(prettyHrtime(end));
}
}
});
server.route({
method: 'GET',
path: '/cpu',
config: {
handler: (req, reply) => {
const start = process.hrtime();
fibonacci(40);
const end = process.hrtime(start);
reply(prettyHrtime(end));
}
}
});
};